331220022233 has 4 divisors (see below), whose sum is σ = 342641402340. Its totient is φ = 319798642128.

The previous prime is 331220022209. The next prime is 331220022251. The reversal of 331220022233 is 332220022133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 332220022133 = 587 ⋅565962559.

It can be written as a sum of positive squares in 2 ways, for example, as 203390176144 + 127829846089 = 450988^2 + 357533^2 .

It is a cyclic number.

It is not a de Polignac number, because 331220022233 - 2²⁴ = 331203245017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 331220022199 and 331220022208.

It is not an unprimeable number, because it can be changed into a prime (331220022283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5710690010 + ... + 5710690067.

It is an arithmetic number, because the mean of its divisors is an integer number (85660350585).

Almost surely, 2^331220022233 is an apocalyptic number.

It is an amenable number.

331220022233 is a deficient number, since it is larger than the sum of its proper divisors (11421380107).

331220022233 is a wasteful number, since it uses less digits than its factorization.

331220022233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11421380106.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 331220022233 its reverse (332220022133), we get a palindrome (663440044366).

The spelling of 331220022233 in words is "three hundred thirty-one billion, two hundred twenty million, twenty-two thousand, two hundred thirty-three".